US PATENT SUBCLASS 379 / 258
.~ Switching controlled in response to called station addressing signal

Current as of: June, 1999
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379 /   HD   TELEPHONIC COMMUNICATIONS

242  DF  CENTRALIZED SWITCHING SYSTEM {15}
258.~ Switching controlled in response to called station addressing signal {9}
259  DF  .~.~> Including deflected electron beam switching device or mechanical or optical switching control (e.g., fluidic)
260  DF  .~.~> With operator position or completion of call (e.g., dial "O", semiautomatic) {4}
268  DF  .~.~> Having shared or common switching control {8}
293  DF  .~.~> Having line finder {2}
296  DF  .~.~> With repeater
297  DF  .~.~> Having specified busy-idle test
298  DF  .~.~> Direct control {3}
306  DF  .~.~> With crosspoint switch detail
307  DF  .~.~> With power supply

DEFINITION

Classification: 379/258

Switching controlled in response to called station addressing signal:

(under subclass 242) Subject matter including ccontrol of line interconnection in response to a call address signal.

(1) Note. The call address signal is a selectively signal which specifies the identity of the particular line or terminal with which communication is desired.

SEE OR SEARCH THIS CLASS, SUBCLASS:

18+, for testing of automatic switching arrangement by use of a call address signal.

111+, for usage measurement.

173+, for an intercom with call addressing.

201+, for identification of a station address. SEE OR SEARCH CLASS

335, Electricity: Magnetically Operated Switches, Magnets, and Electromagnets,

105+, for an automatic telephone switch, per se.

340, Communications: Electrical,

825+, for a signal controlled switching system, not limited to telephone switching.